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Preparation and characterisation of new-polyaluminum chloride-chitosan composite coagulant
Ng, Mega; Liana, Ayu E.; Liu, Sanly; Lim, May; Chow, Christopher W. K.; Wang, Dongsheng; Drikas, Mary; Amal, Rose
2012
Source PublicationWATER RESEARCH
ISSN0043-1354
Volume46Issue:15Pages:4614-4620
AbstractIn this study, the formulation of a novel polyaluminum chloride-chitosan composite coagulant that improves the coagulation process for natural organic matter (NOM) removal was investigated. The performance of the composite coagulant was tested using two water sources (synthetic and natural water) to develop a better understanding on the behaviour of the composite coagulant. Fourier Transform-Infra red (FT-IR) spectroscopy, ferron analysis and zeta potential studies were performed to characterise the composite coagulant. FT-IR analysis showed that there is an intermolecular interaction between Al species and chitosan molecules, while ferron analysis indicated that the distributions of Al-a, Al-b, and Al-c in PACl-chitosan are different from those in PACl. At a low Al dosage (2.16 mg L-1), a much higher removal of NOM from synthetic water, as evidenced from UV254 and Dissolved Organic Carbon (DOC) measurements, was achieved by the composite coagulants in comparison to that removed by PACl or PACl and chitosan added separately. For natural water from the Myponga Reservoir, both polyaluminum chloride (PACl) and PACl-chitosan composite coagulants demonstrated similar dissolved organic carbon (DOC) percentage removal, whereas PACl-chitosan gave a slight improvement in removing the UV254 absorbing components of NOM. (C) 2012 Elsevier Ltd. All rights reserved.
Department环境水质学国家重点实验室
KeywordCoagulation Nom Composite Pacl Mechanism Speciation
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Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/7851
Collection环境水质学国家重点实验室
Recommended Citation
GB/T 7714
Ng, Mega,Liana, Ayu E.,Liu, Sanly,et al. Preparation and characterisation of new-polyaluminum chloride-chitosan composite coagulant[J]. WATER RESEARCH,2012,46(15):4614-4620.
APA Ng, Mega.,Liana, Ayu E..,Liu, Sanly.,Lim, May.,Chow, Christopher W. K..,...&Amal, Rose.(2012).Preparation and characterisation of new-polyaluminum chloride-chitosan composite coagulant.WATER RESEARCH,46(15),4614-4620.
MLA Ng, Mega,et al."Preparation and characterisation of new-polyaluminum chloride-chitosan composite coagulant".WATER RESEARCH 46.15(2012):4614-4620.
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